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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
The maximum steam pressure in a Locomotive boiler is limited to

18 MN/m²
180 MN/m²
1.8 MN/m²
0.18 MN/m²

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Steam Boilers, Engines, Nozzles and Turbines
100% efficiency of a thermal cycle cannot be achieved because of

It is not possible to achieve 0°K temperature
Leakage
Non availability of ideal substance
Frictional losses

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Steam Boilers, Engines, Nozzles and Turbines
The size of a boiler drum in pulverized fuel fired boiler, as its size and capacity, (steam pressure and flow ratings) increase

Increases/decreases depending on steam temperature requirements
Remains unchanged
Increases
Decreases

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Steam Boilers, Engines, Nozzles and Turbines
In a uniflow engine

Steam enters at the centre and exhausts at the other end
Steam enters and exhausts through the same port
Steam enters at one end and exhausts at the centre
None of these

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Steam Boilers, Engines, Nozzles and Turbines
The overall efficiency of thermal power plant is

Boiler efficiency, turbine efficiency, generator efficiency
All the three above plus gas cycle efficiency
Regenerative cycle efficiency
Carnot cycle efficiency

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Steam Boilers, Engines, Nozzles and Turbines
Which of the following is steam dial?

Non-coking bituminous coal
Coking bituminous coal
Pulverized coal
Brown coal

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